Improved shrinking removing reverts from reproducers #1916

Job	Run time
Build Echidna on ubuntu-20.04	5m 36s
Build Echidna on macos-13	35m 52s
Build Echidna on windows-latest	10m 1s
Test with solc 0.4.25 on ubuntu-latest	4m 47s
Test with solc 0.5.7 on ubuntu-latest	3m 33s
Test with solc 0.6.12 on ubuntu-latest	3m 32s
Test with solc 0.7.5 on ubuntu-latest	3m 51s
Test with solc 0.4.25 on windows-latest	4m 37s
Test with solc 0.5.7 on windows-latest	4m 52s
Test with solc 0.6.12 on windows-latest	3m 30s
Test with solc 0.7.5 on windows-latest	5m 6s
	1h 25m 17s

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